Government terms arbitration award on Indus Waters Treaty ‘illegal’
The Government of India formally termed an award issued by a Court of Arbitration on the Indus Waters Treaty (IWT), 1960, "illegal," asserting the tribunal lacks jurisdiction over matters it considers sovereign in nature.
This position echoes India's earlier rejection of a related arbitration ruling on the same treaty.
The Permanent Court of Arbitration (PCA), which administers the tribunal's registry functions, called on India to honour its treaty obligations.
India reaffirmed that its April 2025 decision to hold the treaty's implementation in abeyance continues to remain in force, irrespective of the tribunal's ruling.
Non-Justiciability of "Sovereign" Matters in International Arbitration
International law generally distinguishes between disputes over the interpretation or application of a treaty (typically arbitrable) and unilateral acts a state characterises as flowing from its inherent sovereign prerogatives, such as national security responses (which states often argue fall outside a tribunal's competence, or "compétence de la compétence," to decide). India's position rests on the argument that the Court of Arbitration was never validly constituted, so it has no authority to rule — including no authority to rule on its own jurisdiction — over India's treaty-abeyance decision.
Key Details
- Under general international arbitration practice (reflected in institutional rules such as the UNCITRAL Arbitration Rules, which the IWT's Court of Arbitration procedure draws upon), a tribunal ordinarily has the power of "kompetenz-kompetenz" — to rule on its own jurisdiction — but this power is itself contested where a party denies the tribunal was lawfully constituted in the first place.
- India's specific objection is procedural: it holds that Pakistan's request for a Court of Arbitration ran in parallel with, rather than after, the treaty's Neutral Expert process under Article IX and Annexure F — a sequencing India calls a "manifest breach" invalidating the Court's constitution.
- Because India treats the tribunal as void ab initio, it has boycotted the proceedings and does not recognise any award — interim, partial, or final — issued by it.
India's "illegal" characterisation of the award is a direct application of this non-recognition stance: if the tribunal was never lawfully constituted, its rulings — including any directive that India comply with the treaty — carry no binding force on India, regardless of what the Permanent Court of Arbitration's registry communicates.
The Vienna Convention on the Law of Treaties (VCLT), 1969 — Suspension for Material Breach
Article 60 of the VCLT allows a party to suspend or terminate a treaty in response to a "material breach" by the other party, and Article 62 recognises suspension for a "fundamental change of circumstances." India has invoked security-related grounds — continuing cross-border terrorism, which it links to a fundamental breach of the treaty's cooperative spirit — to justify holding the IWT in abeyance since April 2025, even though the treaty itself contains no explicit exit clause.
Key Details
- India signed but has not ratified the VCLT; it is nonetheless widely treated as codifying customary international law, making its principles persuasive even for non-ratifying states.
- The IWT (1960) predates the VCLT (1969) and, unusually among modern treaties, contains no provision for withdrawal, denunciation, or suspension — a gap India's abeyance decision has thrust into the spotlight.
- Pakistan disputes that any VCLT ground for suspension is met and continues to treat the treaty, and the arbitration proceedings under it, as fully valid.
The PCA's call for India to "respect its treaty obligations" is essentially a restatement of the pacta sunt servanda principle (treaties must be performed in good faith); India's countervailing legal argument is that a material breach by the other party (cross-border terrorism) entitles it to suspend performance under general treaty law, independent of what any improperly constituted tribunal decides.
Precedent: The Kishenganga Arbitration (2013)
The 2013 Kishenganga case was the first time a Court of Arbitration under the IWT delivered a substantive ruling — on Pakistan's challenge to India's Kishenganga Hydro-Electric Project. Unlike the present dispute, India participated fully in that arbitration, and its constitution and authority were not contested by either side.
The Kishenganga precedent shows that India does accept IWT arbitration when properly constituted and sequenced; its rejection of the present award turns on constitutional legitimacy of the tribunal, not a rejection of treaty-based dispute resolution as such.
- Indus Waters Treaty signed: September 19, 1960, Karachi, between India and Pakistan, with the World Bank as facilitator/signatory.
- India announced the treaty's abeyance: April 23, 2025, following a terror attack in Jammu and Kashmir.
- Kishenganga Arbitration: Partial Award February 2013, Final Award December 2013 — the last IWT arbitration India fully participated in.
- Current Court of Arbitration on Kishenganga/Ratle constituted by the World Bank on October 13, 2022; India has not recognised its legitimacy or participated in its proceedings.
- VCLT Article 60 (material breach) and Article 62 (fundamental change of circumstances) are the customary-law grounds most often cited for treaty suspension.
- Ratle Hydroelectric Project (Chenab): 850 MW, one of the two projects at the centre of the present dispute alongside Kishenganga (Jhelum).